Test Catalog Search Home Test Catalog Search Testing Choices: From the standard to the extraordinary × Search Clear Filter by: Clear all Method(s) Enzyme Immunoassay (EIA) (2) Gas Chromatography (GC) (1) Gas Chromatography (GC) and Gas Chromatography/Mass Spectrometry (GC/MS) (1) High Performance Liquid Chromatography/ Tandem Mass Spectrometry (LC-MS/MS) (4) Sample Type Blood (9) Fluid (2) Serum or Plasma (9) Tissue (1) (-) Urine (8) Test Area Therapeutics (8) Test Category (-) Analgesics (8) Test Sub-Category (-) Opiates/Opioids (8) Your search has returned no tests.